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intel: Add support for blitting 6 byte-per-pixel formats.

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The next commit introduces what is apparently our first one, which tripped
over this in glReadPixels.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2013-04-16 17:21:21 -07:00 • committed by Kenneth Graunke
parent 028c11e8e3
commit 645b610b62
1 changed files with 14 additions and 7 deletions
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21
src/mesa/drivers/dri/intel/intel_blit.c
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@ -151,15 +151,22 @@ intelEmitCopyBlit(struct intel_context *intel,
if (src_pitch % 4 != 0 || dst_pitch % 4 != 0)
return false;
/* For big formats (such as floating point), do the copy using 32bpp and
* multiply the coordinates.
/* For big formats (such as floating point), do the copy using 16 or 32bpp
* and multiply the coordinates.
*/
if (cpp > 4) {
assert(cpp % 4 == 0);
dst_x *= cpp / 4;
dst_x2 *= cpp / 4;
src_x *= cpp / 4;
cpp = 4;
if (cpp % 4 == 2) {
dst_x *= cpp / 2;
dst_x2 *= cpp / 2;
src_x *= cpp / 2;
cpp = 2;
} else {
assert(cpp % 4 == 0);
dst_x *= cpp / 4;
dst_x2 *= cpp / 4;
src_x *= cpp / 4;
cpp = 4;
}
}
BR13 = br13_for_cpp(cpp) | translate_raster_op(logic_op) << 16;